663130428 has 24 divisors (see below), whose sum is σ = 1589124432. Its totient is φ = 215069184.

The previous prime is 663130427. The next prime is 663130463. The reversal of 663130428 is 824031366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663130427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 746325 + ... + 747212.

It is an arithmetic number, because the mean of its divisors is an integer number (66213518).

Almost surely, 2^663130428 is an apocalyptic number.

It is an amenable number.

663130428 is an abundant number, since it is smaller than the sum of its proper divisors (925994004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663130428 is a wasteful number, since it uses less digits than its factorization.

663130428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1493581 (or 1493579 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 663130428 is about 25751.3189565117. The cubic root of 663130428 is about 872.0331311234.

The spelling of 663130428 in words is "six hundred sixty-three million, one hundred thirty thousand, four hundred twenty-eight".